1896.] ENTOMOLOGICAL NEWS. 151 



not differ from those characteristic of the genus. There are two 

 broods in this latitude. The young of the first brood begin to 

 appear about the last of April or the first of May, and the second 

 in July. The adult males are peculiar, in the fact there is a 

 winged and a wingless form. The wings in the former are well 

 developed, while in the latter they are represented by mere stubs. 

 The attack is confined usually to the trunk and branches, but the 

 males often cluster on the u-nderside of the leaves. This is a 

 very important pest, from the economic point of view, and is 

 mentioned here in order that entomologists may be on the lookout 

 for it. 



The Cherry Aspidiotus (Aspidiotus forbesi}. This species is 

 by far the most destructive scale I have yet found in Illinois, and 

 unless its spread is checked I believe it will rival the dreaded 

 San Jose scale, Aspidiotus perniciosus Comstock, in its destruc- 

 tion of fruit trees. It has killed many cherry trees in this State 

 the present season. I have seen this species colonated as thickly 

 on nine-year old trees in this State as ever I saw the San Jose 

 scale on trees in the Santa Clara Valley, California. I have found 

 it also on currant, apple, plum, peach, pear and honey locust. 

 Cherry, however, seems to be its favorite, and I have therefore 

 proposed the above-mentioned popular name. I have also found 

 it very abundant on native wild cherry in central and southern 

 Illinois, and I am of the opinion that this was its original food- 

 plant. It confines its attack principally to the trunk and larger 

 branches, but is often found on the leaves and fruit. It is pretty 

 generally distributed over this and adjoining States. It ap- 

 proaches Aspidiotus ancylns Putnam, but differs from that spe- 

 cies in size, color and number of lobes and spinnerets of the last 

 segment of the female. The half matured female hybernates; I 

 believe the species is both oviparous and viviparous, as I have 

 found eggs under scales, and have observed fully developed em- 

 bryos within the body of the females. The specific name pro- 

 posed for this insect is in honor of Prof. S. A. Forbes, State 

 Entomologist of Illinois. 



The Maple Leaf Aspidiotus (Aspidiotus comstocki}. -This in- 

 sect has been very abundant on sugar maple (Acer saccarhinum \ 

 on Mt. Carmel, 111., the present year. It attacks the leaves, 

 living in great numbers on the underside, causing yellowish 



